#include <stdio.h>
int main()
{
	int total;
	int g[5]={3,4,5,6,4};
	float z;
	int i;
	for(i = 1;i < 5 ;i++)
	{
		total+=g[i];
	}
	z = ((float )total/5);
	printf("the student's try %f\n",z);
	return 0;
}
